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Java Enum definition
...eric in both the builder and the message. I'm pretty sure I wouldn't have gone down that route if I hadn't needed it though :)
– Jon Skeet
Mar 22 '12 at 6:45
1
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JavaScript query string [closed]
...mp;]*)/g, m;
while (m = re.exec(queryString)) {
result[decodeURIComponent(m[1])] = decodeURIComponent(m[2]);
}
return result;
}
// ...
var myParam = getQueryString()["myParam"];
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How do I return multiple values from a function in C?
...ng();
}
void foo() {
int a, b;
getPair(&a, &b);
}
Which one you choose to use depends largely on personal preference as to whatever semantics you like more.
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How to generate a random string in Ruby
...ime golfing.
(0...50).map { ('a'..'z').to_a[rand(26)] }.join
And a last one that's even more confusing, but more flexible and wastes fewer cycles:
o = [('a'..'z'), ('A'..'Z')].map(&:to_a).flatten
string = (0...50).map { o[rand(o.length)] }.join
...
如何选择机器学习算法 - 大数据 & AI - 清泛网移动版 - 专注C/C++及内核技术
...eally care about accuracy, your best bet is to test out a couple different ones (making sure to try different parameters within each algorithm as well), and select the best one by cross-validation. But if you’re simply looking for a “good enough” algorithm for your problem, or a place to s...
What is a mixin, and why are they useful?
...ou want to provide a lot of optional features for a class.
You want to use one particular feature in a lot of different classes.
For an example of number one, consider werkzeug's request and response system. I can make a plain old request object by saying:
from werkzeug import BaseRequest
class...
MySQL select 10 random rows from 600K rows fast
... specifically, if you have a gap at the start of your IDs the first one will get picked (min/max-min) of the time. For that case a simple tweak is MAX()-MIN() * RAND + MIN(), which is not too slow.
– Code Abominator
Aug 19 '14 at 4:16
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Persistence unit as RESOURCE_LOCAL or JTA?
...
As a side note: one still can get JTA functionality, even without a full Java EE application server by using third party solutions, like for example Atomikos. So you can have a lightweight web container like Tomcat and still get the JTA supp...
MongoDB vs. Cassandra [closed]
...
Because everyone mentioned twitter here in relation to Cassandra: they are not using Cassandra for persisting tweets, they use still MySQL here (engineering.twitter.com/2010/07/cassandra-at-twitter-today.html). Ok, but I can imagine that ...
Concatenate two slices in Go
... only real overhead will be that it creates a new slice if you didn't have one already, like: foo(1, 2, 3, 4, 5) which will create a new slice that is will hold.
– user1106925
Sep 24 '14 at 14:00
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